Popup Window Image Size Scaled Small

I’m trying out the plugin and when I click the thumbnail it comes up with the pop up version but it is scaled down. When I actually download the image it is the full size image but for some reason the plugin is scaling the size of the image display to be quite a bit smaller. Please help me resolve.

http://www.aberdeens.com/site/?page_id=102

Also curious about the full screen version shown in the demo. Can’t get that to display like it does in the demo.

Thanks!

https://wordpress.org/plugins/wp-bootstrap-gallery/